Patents Represented by Attorney, Agent or Law Firm Gary A. Samuels
  • Leak testing
    Patent number: 5390531
    Abstract: An apparatus for leak testing a garment, such as an over-water flying suit formed of a waterproof material, comprises a closure plug (4) for closing the neck of the garment and clamps (36, 38, 40, 42) for holding it in place. Clamps (26, 28) close other openings in the garment to allow it to be inflated, usually turned inside out to simulate exposure to water immersion. A mixture of water and compressed air is sprayed into the inflated garment via nozzles (18). The inflated garment is then inspected visually for leaks, and may be raised to an upright position to facilitate inspection. A restraining cage (70) can be used to prevent damage by stretching during inflation.
    Type: Grant
    Filed: April 26, 1994
    Date of Patent: February 21, 1995
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Thomas C. Taylor
  • Storage vessel
    Patent number: 5389036
    Abstract: A storage vessel for storing grain or other natural products comprises a gas-impermeable enclosure having a water-vapour-permeable membrane to allow the grain to breath and dry, and to prevent condensation and mould growth. The membrane is impermeable to oxygen gas to allow a reduced oxygen atmosphere (e.g. 3 to 7%) to be established as oxygen is used up by insect pests within the grain. The insects are unable to survive at such low levels of oxygen. Thus the grain is protected against pests without the use of chemical pesticides.
    Type: Grant
    Filed: January 26, 1994
    Date of Patent: February 14, 1995
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: David Halley
  • Microemulsion polymerization systems and coated materials made therefrom
    Patent number: 5385694
    Abstract: Aqueous microemulsions are described which are polymerized to produce a latex containing particles of organic polymer having recurring pendant perfluorinated organic side chains which have an average particle size of between 0.01 and 0.5 micrometers. The latex can be used to coat the surface of substrate structures, or to coat the pore walls of porous substrate structures.
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: January 31, 1995
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Huey S. Wu, Eric W. Kaler
  • Electrical interconnect assembly
    Patent number: 5383788
    Abstract: This invention provides an assembly capable of connecting a flat flexible cable directly to circuitry without pins or sockets and without regard to line width or pitch. This allows the use of one cable configuration for various interconnects that would have otherwise required multiple custom cable configurations. The invention provides flat flexible circuitry whose insulation is configured to provide a resilient spring force sufficient to force exposed conductors of the circuitry firmly against conductors of devices to interconnected when the flexible circuitry is retained by a catch system on said device.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: January 24, 1995
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Mark Spencer
  • Process for removing alcohol from liquids
    Patent number: 5382364
    Abstract: This invention utilizes the partial pressure difference of alcohol in two areas separated by a microporous membrane wherein one area contains a solution of alcohol and at least one other liquid and the other area contains predominately only the other liquid to cause the alcohol to migrate through the membrane.
    Type: Grant
    Filed: March 17, 1993
    Date of Patent: January 17, 1995
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: John Bowser, John Dennison
  • Retractable gloves for handling objects in isolation
    Patent number: 5380078
    Abstract: Retractable clean room or glove box gloves are described in which the retractable property is imparted by a series of longitudinal elastic strips located in the sleeve of the glove.
    Type: Grant
    Filed: June 22, 1993
    Date of Patent: January 10, 1995
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Carole A. Baczkowski, Margaret A. Goldwater, Celia R. Ingram, Douglas B. McKenna, Evelyn C. Yurcovic
  • Flexible electrically heatable hose
    Patent number: 5381511
    Abstract: A heatable hose assembly having a helically corrugated central polymer tube of polyether ether ketone wrapped with a layer of polymer tape. A means for heating the central polymer tube is arranged on the layer of high strength tape as is a means for monitoring and controlling the means for heating the central polymer tube. Surrounding the arrangement is a layer of thermal insulation and a protective jacket. The heatable hose assembly is of utility for use in systems for the monitoring of acid gases from emission stacks.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: January 10, 1995
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Bamdad Bahar, Edward L. Kozlowski, Jr.
  • Microemulsion polymerization systems and coated materials made therefrom
    Patent number: 5376441
    Abstract: Aqueous microemulsions are described which are polymerized to produce a latex containing particles of organic polymer having recurring pendant perfluorinated organic side chains which have an average particle size of between 0.01 and 0.5 micrometers. The latex can be used to coat the surface of substrate structures, or to coat the pore walls of porous substrate structures.
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: December 27, 1994
    Assignee: W. L. Gore & associates, Inc.
    Inventors: Huey Shen Wu, Eric W. Kaler
  • Dense polytetrafluoroethylene articles
    Patent number: 5374473
    Abstract: This invention provides a densified previously expanded PTFE article having remnants of a fibril and node structure and a process for producing the article. A PTFE shape is compressed through the application of heat and pressure while the shape itself is under a vacuum, thus forming the densified ePTFE article. The densified PTFE article exhibits increased flexural strength.A diaphragm containing the densified ePTFE article as one layer is also disclosed.
    Type: Grant
    Filed: August 19, 1992
    Date of Patent: December 20, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: John B. Knox, William E. Delaney, III, John M. Connelly, Jr.
  • Continuous polytetrafloroethylene fibers
    Patent number: 5364699
    Abstract: This invention provides for a continuous PTFE fiber having on its surface a substantially round profile and a single spiralling seam formed from a continuous sheet of polytetrafluoroethylene which is helically rolled and self-adhered. The PTFE sheet may include microporous PTFE as well as expanded microporous PTFE. The PTFE sheet may be filled with particulate fillers or coated with polymeric coatings prior to the formation of the inventive fiber. The PTFE sheet may be used to contain various filamentary or sheet-like elements with the inventive fiber.The method for producing the inventive fiber is also disclosed.
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: November 15, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Donald L. Hollenbaugh, Jr., Gordon L. McGregor, Raymond B. Minor
  • Aqueous submersion pyrolyzation of fluoroform
    Patent number: 5364990
    Abstract: A preparation of perfluoroolefins from fluoroform is described in which the fluoroform is pyrolyzed in a flame submerged in water in which the water acts as the walls of a reaction vessel.
    Type: Grant
    Filed: January 13, 1994
    Date of Patent: November 15, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Jack Hegenbarth, Norman A. Street
  • Hydrophilic compositions with increased thermal and solvent resistance
    Patent number: 5354587
    Abstract: A fluid filtration material made of a porous substrate, e,g. a membrane or a fabric that is coated with a fluorinated copolymer that contains recurring vinyl alcohol units to impart hydrophilicity. The material is crosslinked with multifunctional epoxides to maintain hydrophilicity on exposure to heat or solvent.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: October 11, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Dilip R. Abayasekara
  • Hydrophilic compositions with increased thermal resistance
    Patent number: 5352511
    Abstract: A fluid filtration material made of a porous substrate, e.g. a membrane or a fabric, that is coated with a fluorinated copolymer that contains recurring vinyl alcohol units that have been reacted with a monoepoxide to aid in preventing loss of hydrophilicity in the coated material.
    Type: Grant
    Filed: November 15, 1993
    Date of Patent: October 4, 1994
    Assignee: W. L. Gore & Associates, Onc.
    Inventors: Dilip R. Abayasekara, Robert L. Henn
  • Internally potted end cap for a pleated filter medium
    Patent number: 5350515
    Abstract: The invention comprises a filter cartridge including a cylindrical filter medium potted into a top cap, and having an internally potted bottom closure molded in place inside the filter medium.
    Type: Grant
    Filed: March 29, 1993
    Date of Patent: September 27, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Stephen Stark, Raymond Wnenchak
  • Pump diaphragm
    Patent number: 5349896
    Abstract: A flexible pump diaphragm for pumping fluids is described in which the diaphragm has a number of ribs or troughs located radially across its circumferential flexure portion.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: September 27, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: William E. Delaney, III, John M. Connelly, Jr., Fred C. Sicker
  • Sterilizable cable assemblies
    Patent number: 5349137
    Abstract: A steam and liquid sterilizable assembly of electrical and optical fiber cables within a sealed polymer housing which features sealed joints and conductive traces between and through components. At least one optical fiber cable is sealed into a metal ferrule by an organic resin and the ferrule then sealed by soldering into a laminated, multilayer organic polymer disc or board. At least one electrical cable is soldered to one surface of the disc or board to a conductive trace which connects through and between the layers of the disc or board to a conductive electrical contact on the opposite surface of the disc or board. The disc or board with the optical and electrical contacts is embedded in a molded polymer housing. The assembly is useful in endoscopy applications.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: September 20, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Alfredo Cedrone
  • Sterilizable packaging material
    Patent number: 5342673
    Abstract: A flexible, air permeable, high temperature resistant, bacteria-impermeable packaging material is described. The packaging material is preferably made of nonwoven polyester layers on either side of and bonded to a microporous membrane. One nonwoven is bonded to the membrane with a thermoplastic adhesive.
    Type: Grant
    Filed: February 23, 1993
    Date of Patent: August 30, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Jane Bowman, Ed Daniel, Bob Henn, Jennifer Levy, Neville Vakharia
  • Gas permeable coated porous membranes
    Patent number: 5342434
    Abstract: A gas permeable material having continuous pores through it, in which the pore interiors are coated with a coating composition of the formula: ##STR1## wherein B is selected from the class consisting of ##STR2## and R is (--CH.sub.2 --).sub.x wherein x is a cardinal number of 1-4;Y i s C.sub.n F.sub.2n+1 or ##STR3## where n is a cardinal number of 3-20 and R.sup.1 is H or alkyl of 1-4 carbon.
    Type: Grant
    Filed: July 30, 1993
    Date of Patent: August 30, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventor: Huey S. Wu
  • Fluororesin foam
    Patent number: 5340843
    Abstract: Perfluorotripentylamine, perfluoropolyether or another such high-boiling liquid is added as a foaming agent to a thermoplastic fluororesin such as a tetrafluoroethylene-perfluoroalkyl vinyl ether copolymer resin or a tetrafluoroethylene-hexafluoropropylene copolymer resin. Because the vapor pressure of said foaming agent in the molten fluororesin is lower than that of Freon or another such low-boiling foaming agent, the cells in the foam can be made fine and uniform in diameter.
    Type: Grant
    Filed: February 22, 1993
    Date of Patent: August 23, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Makoto Tsuruta, Ken Oda
  • Process for manufacture of twisted pair electrical cables having conductors of equal length
    Patent number: 5334271
    Abstract: A process for obtaining a twisted pair electrical signal cable having conductors of equal physical length and equal signal transmitting properties by passing a parallel pair of adhered insulated conductors of equal length through a closely-fitting die and twisting the conductors into a twisted pair cable. The process applies to thermopolymer insulated and ePTFE insulated conductors.
    Type: Grant
    Filed: October 5, 1992
    Date of Patent: August 2, 1994
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Roddy M. Bullock, Alfredo L. Cedrone, Michael L. Eckert, James G. Vana, Jr.